<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<title>CompositeConfiguration xref</title>
<link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" />
</head>
<body>
<div id="overview"><a href="../../../../../apidocs/org/apache/commons/configuration/CompositeConfiguration.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> * contributor license agreements.  See the NOTICE file distributed with</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> * the License.  You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *     <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> * limitations under the License.</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">package</strong> org.apache.commons.configuration;
<a class="jxr_linenumber" name="19" href="#19">19</a>  
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.util.Collection;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.util.Iterator;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.util.LinkedHashSet;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.LinkedList;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.List;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.util.ListIterator;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
<a class="jxr_linenumber" name="28" href="#28">28</a>  
<a class="jxr_linenumber" name="29" href="#29">29</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;{@code CompositeConfiguration} allows you to add multiple {@code Configuration}</em>
<a class="jxr_linenumber" name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * objects to an aggregated configuration. If you add Configuration1, and then Configuration2,</em>
<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * any properties shared will mean that the value defined by Configuration1</em>
<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * will be returned. If Configuration1 doesn't have the property, then</em>
<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * Configuration2 will be checked. You can add multiple different types or the</em>
<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> * same type of properties file.&lt;/p&gt;</em>
<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;When querying properties the order in which child configurations have been</em>
<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> * added is relevant. To deal with property updates, a so-called &lt;em&gt;in-memory</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment"> * configuration&lt;/em&gt; is used. Per default, such a configuration is created</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * automatically. All property writes target this special configuration. There</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> * are constructors which allow you to provide a specific in-memory configuration.</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * If used that way, the in-memory configuration is always the last one in the</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * list of child configurations. This means that for query operations all other</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * configurations take precedence.&lt;/p&gt;</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;Alternatively it is possible to mark a child configuration as in-memory</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * configuration when it is added. In this case the treatment of the in-memory</em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * configuration is slightly different: it remains in the list of child</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> * configurations at the position it was added, i.e. its priority for property</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> * queries can be defined by adding the child configurations in the correct</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment"> * order.&lt;/p&gt;</em>
<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment"> * @author &lt;a href="<a href="mailto:epugh@upstate.com" target="alexandria_uri">mailto:epugh@upstate.com</a>"&gt;Eric Pugh&lt;/a&gt;</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment"> * @author &lt;a href="<a href="mailto:hps@intermeta.de" target="alexandria_uri">mailto:hps@intermeta.de</a>"&gt;Henning P. Schmiedehausen&lt;/a&gt;</em>
<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment"> * @version $Id: CompositeConfiguration.java 1233058 2012-01-18 20:49:12Z oheger $</em>
<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="55" href="#55">55</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/commons/configuration/CompositeConfiguration.html">CompositeConfiguration</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../org/apache/commons/configuration/AbstractConfiguration.html">AbstractConfiguration</a>
<a class="jxr_linenumber" name="56" href="#56">56</a>  <strong class="jxr_keyword">implements</strong> Cloneable
<a class="jxr_linenumber" name="57" href="#57">57</a>  {
<a class="jxr_linenumber" name="58" href="#58">58</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> List holding all the configuration */</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>      <strong class="jxr_keyword">private</strong> List&lt;Configuration&gt; configList = <strong class="jxr_keyword">new</strong> LinkedList&lt;Configuration&gt;();
<a class="jxr_linenumber" name="60" href="#60">60</a>  
<a class="jxr_linenumber" name="61" href="#61">61</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment">     * Configuration that holds in memory stuff.  Inserted as first so any</em>
<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment">     * setProperty() override anything else added.</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> inMemoryConfiguration;
<a class="jxr_linenumber" name="66" href="#66">66</a>  
<a class="jxr_linenumber" name="67" href="#67">67</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">     * Stores a flag whether the current in-memory configuration is also a</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">     * child configuration.</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="71" href="#71">71</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> inMemoryConfigIsChild;
<a class="jxr_linenumber" name="72" href="#72">72</a>  
<a class="jxr_linenumber" name="73" href="#73">73</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment">     * Creates an empty CompositeConfiguration object which can then</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     * be added some other Configuration files</em>
<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="77" href="#77">77</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/commons/configuration/CompositeConfiguration.html">CompositeConfiguration</a>()
<a class="jxr_linenumber" name="78" href="#78">78</a>      {
<a class="jxr_linenumber" name="79" href="#79">79</a>          clear();
<a class="jxr_linenumber" name="80" href="#80">80</a>      }
<a class="jxr_linenumber" name="81" href="#81">81</a>  
<a class="jxr_linenumber" name="82" href="#82">82</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment">     * Creates a CompositeConfiguration object with a specified &lt;em&gt;in-memory</em>
<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment">     * configuration&lt;/em&gt;. This configuration will store any changes made to the</em>
<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment">     * {@code CompositeConfiguration}. Note: Use this constructor if you want to</em>
<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">     * set a special type of in-memory configuration. If you have a</em>
<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">     * configuration which should act as both a child configuration and as</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     * in-memory configuration, use</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * {@link #addConfiguration(Configuration, boolean)} with a value of</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     * &lt;b&gt;true&lt;/b&gt; instead.</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">     * @param inMemoryConfiguration the in memory configuration to use</em>
<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/commons/configuration/CompositeConfiguration.html">CompositeConfiguration</a>(<a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> inMemoryConfiguration)
<a class="jxr_linenumber" name="95" href="#95">95</a>      {
<a class="jxr_linenumber" name="96" href="#96">96</a>          configList.clear();
<a class="jxr_linenumber" name="97" href="#97">97</a>          <strong class="jxr_keyword">this</strong>.inMemoryConfiguration = inMemoryConfiguration;
<a class="jxr_linenumber" name="98" href="#98">98</a>          configList.add(inMemoryConfiguration);
<a class="jxr_linenumber" name="99" href="#99">99</a>      }
<a class="jxr_linenumber" name="100" href="#100">100</a> 
<a class="jxr_linenumber" name="101" href="#101">101</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment">     * Create a CompositeConfiguration with an empty in memory configuration</em>
<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment">     * and adds the collection of configurations specified.</em>
<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">     * @param configurations the collection of configurations to add</em>
<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="107" href="#107">107</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/commons/configuration/CompositeConfiguration.html">CompositeConfiguration</a>(Collection&lt;? <strong class="jxr_keyword">extends</strong> Configuration&gt; configurations)
<a class="jxr_linenumber" name="108" href="#108">108</a>     {
<a class="jxr_linenumber" name="109" href="#109">109</a>         <strong class="jxr_keyword">this</strong>(<strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/commons/configuration/BaseConfiguration.html">BaseConfiguration</a>(), configurations);
<a class="jxr_linenumber" name="110" href="#110">110</a>     }
<a class="jxr_linenumber" name="111" href="#111">111</a> 
<a class="jxr_linenumber" name="112" href="#112">112</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment">     * Creates a CompositeConfiguration with a specified &lt;em&gt;in-memory</em>
<a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment">     * configuration&lt;/em&gt;, and then adds the given collection of configurations.</em>
<a class="jxr_linenumber" name="115" href="#115">115</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="116" href="#116">116</a> <em class="jxr_javadoccomment">     * @param inMemoryConfiguration the in memory configuration to use</em>
<a class="jxr_linenumber" name="117" href="#117">117</a> <em class="jxr_javadoccomment">     * @param configurations        the collection of configurations to add</em>
<a class="jxr_linenumber" name="118" href="#118">118</a> <em class="jxr_javadoccomment">     * @see #CompositeConfiguration(Configuration)</em>
<a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="120" href="#120">120</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/commons/configuration/CompositeConfiguration.html">CompositeConfiguration</a>(<a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> inMemoryConfiguration,
<a class="jxr_linenumber" name="121" href="#121">121</a>             Collection&lt;? <strong class="jxr_keyword">extends</strong> Configuration&gt; configurations)
<a class="jxr_linenumber" name="122" href="#122">122</a>     {
<a class="jxr_linenumber" name="123" href="#123">123</a>         <strong class="jxr_keyword">this</strong>(inMemoryConfiguration);
<a class="jxr_linenumber" name="124" href="#124">124</a> 
<a class="jxr_linenumber" name="125" href="#125">125</a>         <strong class="jxr_keyword">if</strong> (configurations != <strong class="jxr_keyword">null</strong>)
<a class="jxr_linenumber" name="126" href="#126">126</a>         {
<a class="jxr_linenumber" name="127" href="#127">127</a>             <strong class="jxr_keyword">for</strong> (Configuration c : configurations)
<a class="jxr_linenumber" name="128" href="#128">128</a>             {
<a class="jxr_linenumber" name="129" href="#129">129</a>                 addConfiguration(c);
<a class="jxr_linenumber" name="130" href="#130">130</a>             }
<a class="jxr_linenumber" name="131" href="#131">131</a>         }
<a class="jxr_linenumber" name="132" href="#132">132</a>     }
<a class="jxr_linenumber" name="133" href="#133">133</a> 
<a class="jxr_linenumber" name="134" href="#134">134</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment">     * Add a configuration.</em>
<a class="jxr_linenumber" name="136" href="#136">136</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="137" href="#137">137</a> <em class="jxr_javadoccomment">     * @param config the configuration to add</em>
<a class="jxr_linenumber" name="138" href="#138">138</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="139" href="#139">139</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addConfiguration(<a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> config)
<a class="jxr_linenumber" name="140" href="#140">140</a>     {
<a class="jxr_linenumber" name="141" href="#141">141</a>         addConfiguration(config, false);
<a class="jxr_linenumber" name="142" href="#142">142</a>     }
<a class="jxr_linenumber" name="143" href="#143">143</a> 
<a class="jxr_linenumber" name="144" href="#144">144</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment">     * Adds a child configuration and optionally makes it the &lt;em&gt;in-memory</em>
<a class="jxr_linenumber" name="146" href="#146">146</a> <em class="jxr_javadoccomment">     * configuration&lt;/em&gt;. This means that all future property write operations</em>
<a class="jxr_linenumber" name="147" href="#147">147</a> <em class="jxr_javadoccomment">     * are executed on this configuration. Note that the current in-memory</em>
<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_javadoccomment">     * configuration is replaced by the new one. If it was created automatically</em>
<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_javadoccomment">     * or passed to the constructor, it is removed from the list of child</em>
<a class="jxr_linenumber" name="150" href="#150">150</a> <em class="jxr_javadoccomment">     * configurations! Otherwise, it stays in the list of child configurations</em>
<a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_javadoccomment">     * at its current position, but it passes its role as in-memory</em>
<a class="jxr_linenumber" name="152" href="#152">152</a> <em class="jxr_javadoccomment">     * configuration to the new one.</em>
<a class="jxr_linenumber" name="153" href="#153">153</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="154" href="#154">154</a> <em class="jxr_javadoccomment">     * @param config the configuration to be added</em>
<a class="jxr_linenumber" name="155" href="#155">155</a> <em class="jxr_javadoccomment">     * @param asInMemory &lt;b&gt;true&lt;/b&gt; if this configuration becomes the new</em>
<a class="jxr_linenumber" name="156" href="#156">156</a> <em class="jxr_javadoccomment">     *        &lt;em&gt;in-memory&lt;/em&gt; configuration, &lt;b&gt;false&lt;/b&gt; otherwise</em>
<a class="jxr_linenumber" name="157" href="#157">157</a> <em class="jxr_javadoccomment">     * @since 1.8</em>
<a class="jxr_linenumber" name="158" href="#158">158</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="159" href="#159">159</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addConfiguration(<a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> config, <strong class="jxr_keyword">boolean</strong> asInMemory)
<a class="jxr_linenumber" name="160" href="#160">160</a>     {
<a class="jxr_linenumber" name="161" href="#161">161</a>         <strong class="jxr_keyword">if</strong> (!configList.contains(config))
<a class="jxr_linenumber" name="162" href="#162">162</a>         {
<a class="jxr_linenumber" name="163" href="#163">163</a>             <strong class="jxr_keyword">if</strong> (asInMemory)
<a class="jxr_linenumber" name="164" href="#164">164</a>             {
<a class="jxr_linenumber" name="165" href="#165">165</a>                 replaceInMemoryConfiguration(config);
<a class="jxr_linenumber" name="166" href="#166">166</a>                 inMemoryConfigIsChild = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="167" href="#167">167</a>             }
<a class="jxr_linenumber" name="168" href="#168">168</a> 
<a class="jxr_linenumber" name="169" href="#169">169</a>             <strong class="jxr_keyword">if</strong> (!inMemoryConfigIsChild)
<a class="jxr_linenumber" name="170" href="#170">170</a>             {
<a class="jxr_linenumber" name="171" href="#171">171</a>                 <em class="jxr_comment">// As the inMemoryConfiguration contains all manually added</em>
<a class="jxr_linenumber" name="172" href="#172">172</a>                 <em class="jxr_comment">// keys, we must make sure that it is always last. "Normal", non</em>
<a class="jxr_linenumber" name="173" href="#173">173</a>                 <em class="jxr_comment">// composed configurations add their keys at the end of the</em>
<a class="jxr_linenumber" name="174" href="#174">174</a>                 <em class="jxr_comment">// configuration and we want to mimic this behavior.</em>
<a class="jxr_linenumber" name="175" href="#175">175</a>                 configList.add(configList.indexOf(inMemoryConfiguration),
<a class="jxr_linenumber" name="176" href="#176">176</a>                         config);
<a class="jxr_linenumber" name="177" href="#177">177</a>             }
<a class="jxr_linenumber" name="178" href="#178">178</a>             <strong class="jxr_keyword">else</strong>
<a class="jxr_linenumber" name="179" href="#179">179</a>             {
<a class="jxr_linenumber" name="180" href="#180">180</a>                 <em class="jxr_comment">// However, if the in-memory configuration is a regular child,</em>
<a class="jxr_linenumber" name="181" href="#181">181</a>                 <em class="jxr_comment">// only the order in which child configurations are added is</em>
<a class="jxr_linenumber" name="182" href="#182">182</a>                 <em class="jxr_comment">// relevant</em>
<a class="jxr_linenumber" name="183" href="#183">183</a>                 configList.add(config);
<a class="jxr_linenumber" name="184" href="#184">184</a>             }
<a class="jxr_linenumber" name="185" href="#185">185</a> 
<a class="jxr_linenumber" name="186" href="#186">186</a>             <strong class="jxr_keyword">if</strong> (config instanceof AbstractConfiguration)
<a class="jxr_linenumber" name="187" href="#187">187</a>             {
<a class="jxr_linenumber" name="188" href="#188">188</a>                 ((<a href="../../../../org/apache/commons/configuration/AbstractConfiguration.html">AbstractConfiguration</a>) config)
<a class="jxr_linenumber" name="189" href="#189">189</a>                         .setThrowExceptionOnMissing(isThrowExceptionOnMissing());
<a class="jxr_linenumber" name="190" href="#190">190</a>             }
<a class="jxr_linenumber" name="191" href="#191">191</a>         }
<a class="jxr_linenumber" name="192" href="#192">192</a>     }
<a class="jxr_linenumber" name="193" href="#193">193</a> 
<a class="jxr_linenumber" name="194" href="#194">194</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="195" href="#195">195</a> <em class="jxr_javadoccomment">     * Remove a configuration. The in memory configuration cannot be removed.</em>
<a class="jxr_linenumber" name="196" href="#196">196</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="197" href="#197">197</a> <em class="jxr_javadoccomment">     * @param config The configuration to remove</em>
<a class="jxr_linenumber" name="198" href="#198">198</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="199" href="#199">199</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> removeConfiguration(<a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> config)
<a class="jxr_linenumber" name="200" href="#200">200</a>     {
<a class="jxr_linenumber" name="201" href="#201">201</a>         <em class="jxr_comment">// Make sure that you can't remove the inMemoryConfiguration from</em>
<a class="jxr_linenumber" name="202" href="#202">202</a>         <em class="jxr_comment">// the CompositeConfiguration object</em>
<a class="jxr_linenumber" name="203" href="#203">203</a>         <strong class="jxr_keyword">if</strong> (!config.equals(inMemoryConfiguration))
<a class="jxr_linenumber" name="204" href="#204">204</a>         {
<a class="jxr_linenumber" name="205" href="#205">205</a>             configList.remove(config);
<a class="jxr_linenumber" name="206" href="#206">206</a>         }
<a class="jxr_linenumber" name="207" href="#207">207</a>     }
<a class="jxr_linenumber" name="208" href="#208">208</a> 
<a class="jxr_linenumber" name="209" href="#209">209</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="210" href="#210">210</a> <em class="jxr_javadoccomment">     * Return the number of configurations.</em>
<a class="jxr_linenumber" name="211" href="#211">211</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="212" href="#212">212</a> <em class="jxr_javadoccomment">     * @return the number of configuration</em>
<a class="jxr_linenumber" name="213" href="#213">213</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="214" href="#214">214</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getNumberOfConfigurations()
<a class="jxr_linenumber" name="215" href="#215">215</a>     {
<a class="jxr_linenumber" name="216" href="#216">216</a>         <strong class="jxr_keyword">return</strong> configList.size();
<a class="jxr_linenumber" name="217" href="#217">217</a>     }
<a class="jxr_linenumber" name="218" href="#218">218</a> 
<a class="jxr_linenumber" name="219" href="#219">219</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="220" href="#220">220</a> <em class="jxr_javadoccomment">     * Removes all child configurations and reinitializes the &lt;em&gt;in-memory</em>
<a class="jxr_linenumber" name="221" href="#221">221</a> <em class="jxr_javadoccomment">     * configuration&lt;/em&gt;. &lt;strong&gt;Attention:&lt;/strong&gt; A new in-memory</em>
<a class="jxr_linenumber" name="222" href="#222">222</a> <em class="jxr_javadoccomment">     * configuration is created; the old one is lost.</em>
<a class="jxr_linenumber" name="223" href="#223">223</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="224" href="#224">224</a>     @Override
<a class="jxr_linenumber" name="225" href="#225">225</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> clear()
<a class="jxr_linenumber" name="226" href="#226">226</a>     {
<a class="jxr_linenumber" name="227" href="#227">227</a>         configList.clear();
<a class="jxr_linenumber" name="228" href="#228">228</a>         <em class="jxr_comment">// recreate the in memory configuration</em>
<a class="jxr_linenumber" name="229" href="#229">229</a>         inMemoryConfiguration = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/commons/configuration/BaseConfiguration.html">BaseConfiguration</a>();
<a class="jxr_linenumber" name="230" href="#230">230</a>         ((<a href="../../../../org/apache/commons/configuration/BaseConfiguration.html">BaseConfiguration</a>) inMemoryConfiguration).setThrowExceptionOnMissing(isThrowExceptionOnMissing());
<a class="jxr_linenumber" name="231" href="#231">231</a>         ((<a href="../../../../org/apache/commons/configuration/BaseConfiguration.html">BaseConfiguration</a>) inMemoryConfiguration).setListDelimiter(getListDelimiter());
<a class="jxr_linenumber" name="232" href="#232">232</a>         ((<a href="../../../../org/apache/commons/configuration/BaseConfiguration.html">BaseConfiguration</a>) inMemoryConfiguration).setDelimiterParsingDisabled(isDelimiterParsingDisabled());
<a class="jxr_linenumber" name="233" href="#233">233</a>         configList.add(inMemoryConfiguration);
<a class="jxr_linenumber" name="234" href="#234">234</a>         inMemoryConfigIsChild = false;
<a class="jxr_linenumber" name="235" href="#235">235</a>     }
<a class="jxr_linenumber" name="236" href="#236">236</a> 
<a class="jxr_linenumber" name="237" href="#237">237</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="238" href="#238">238</a> <em class="jxr_javadoccomment">     * Add this property to the inmemory Configuration.</em>
<a class="jxr_linenumber" name="239" href="#239">239</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="240" href="#240">240</a> <em class="jxr_javadoccomment">     * @param key The Key to add the property to.</em>
<a class="jxr_linenumber" name="241" href="#241">241</a> <em class="jxr_javadoccomment">     * @param token The Value to add.</em>
<a class="jxr_linenumber" name="242" href="#242">242</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="243" href="#243">243</a>     @Override
<a class="jxr_linenumber" name="244" href="#244">244</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> addPropertyDirect(String key, Object token)
<a class="jxr_linenumber" name="245" href="#245">245</a>     {
<a class="jxr_linenumber" name="246" href="#246">246</a>         inMemoryConfiguration.addProperty(key, token);
<a class="jxr_linenumber" name="247" href="#247">247</a>     }
<a class="jxr_linenumber" name="248" href="#248">248</a> 
<a class="jxr_linenumber" name="249" href="#249">249</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_javadoccomment">     * Read property from underlying composite</em>
<a class="jxr_linenumber" name="251" href="#251">251</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="252" href="#252">252</a> <em class="jxr_javadoccomment">     * @param key key to use for mapping</em>
<a class="jxr_linenumber" name="253" href="#253">253</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="254" href="#254">254</a> <em class="jxr_javadoccomment">     * @return object associated with the given configuration key.</em>
<a class="jxr_linenumber" name="255" href="#255">255</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="256" href="#256">256</a>     <strong class="jxr_keyword">public</strong> Object getProperty(String key)
<a class="jxr_linenumber" name="257" href="#257">257</a>     {
<a class="jxr_linenumber" name="258" href="#258">258</a>         <a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> firstMatchingConfiguration = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="259" href="#259">259</a>         <strong class="jxr_keyword">for</strong> (Configuration config : configList)
<a class="jxr_linenumber" name="260" href="#260">260</a>         {
<a class="jxr_linenumber" name="261" href="#261">261</a>             <strong class="jxr_keyword">if</strong> (config.containsKey(key))
<a class="jxr_linenumber" name="262" href="#262">262</a>             {
<a class="jxr_linenumber" name="263" href="#263">263</a>                 firstMatchingConfiguration = config;
<a class="jxr_linenumber" name="264" href="#264">264</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="265" href="#265">265</a>             }
<a class="jxr_linenumber" name="266" href="#266">266</a>         }
<a class="jxr_linenumber" name="267" href="#267">267</a> 
<a class="jxr_linenumber" name="268" href="#268">268</a>         <strong class="jxr_keyword">if</strong> (firstMatchingConfiguration != <strong class="jxr_keyword">null</strong>)
<a class="jxr_linenumber" name="269" href="#269">269</a>         {
<a class="jxr_linenumber" name="270" href="#270">270</a>             <strong class="jxr_keyword">return</strong> firstMatchingConfiguration.getProperty(key);
<a class="jxr_linenumber" name="271" href="#271">271</a>         }
<a class="jxr_linenumber" name="272" href="#272">272</a>         <strong class="jxr_keyword">else</strong>
<a class="jxr_linenumber" name="273" href="#273">273</a>         {
<a class="jxr_linenumber" name="274" href="#274">274</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="275" href="#275">275</a>         }
<a class="jxr_linenumber" name="276" href="#276">276</a>     }
<a class="jxr_linenumber" name="277" href="#277">277</a> 
<a class="jxr_linenumber" name="278" href="#278">278</a>     <strong class="jxr_keyword">public</strong> Iterator&lt;String&gt; getKeys()
<a class="jxr_linenumber" name="279" href="#279">279</a>     {
<a class="jxr_linenumber" name="280" href="#280">280</a>         Set&lt;String&gt; keys = <strong class="jxr_keyword">new</strong> LinkedHashSet&lt;String&gt;();
<a class="jxr_linenumber" name="281" href="#281">281</a>         <strong class="jxr_keyword">for</strong> (Configuration config : configList)
<a class="jxr_linenumber" name="282" href="#282">282</a>         {
<a class="jxr_linenumber" name="283" href="#283">283</a>             <strong class="jxr_keyword">for</strong> (Iterator&lt;String&gt; it = config.getKeys(); it.hasNext();)
<a class="jxr_linenumber" name="284" href="#284">284</a>             {
<a class="jxr_linenumber" name="285" href="#285">285</a>                 keys.add(it.next());
<a class="jxr_linenumber" name="286" href="#286">286</a>             }
<a class="jxr_linenumber" name="287" href="#287">287</a>         }
<a class="jxr_linenumber" name="288" href="#288">288</a> 
<a class="jxr_linenumber" name="289" href="#289">289</a>         <strong class="jxr_keyword">return</strong> keys.iterator();
<a class="jxr_linenumber" name="290" href="#290">290</a>     }
<a class="jxr_linenumber" name="291" href="#291">291</a> 
<a class="jxr_linenumber" name="292" href="#292">292</a>     @Override
<a class="jxr_linenumber" name="293" href="#293">293</a>     <strong class="jxr_keyword">public</strong> Iterator&lt;String&gt; getKeys(String key)
<a class="jxr_linenumber" name="294" href="#294">294</a>     {
<a class="jxr_linenumber" name="295" href="#295">295</a>         Set&lt;String&gt; keys = <strong class="jxr_keyword">new</strong> LinkedHashSet&lt;String&gt;();
<a class="jxr_linenumber" name="296" href="#296">296</a>         <strong class="jxr_keyword">for</strong> (Configuration config : configList)
<a class="jxr_linenumber" name="297" href="#297">297</a>         {
<a class="jxr_linenumber" name="298" href="#298">298</a>             <strong class="jxr_keyword">for</strong> (Iterator&lt;String&gt; it = config.getKeys(key); it.hasNext();)
<a class="jxr_linenumber" name="299" href="#299">299</a>             {
<a class="jxr_linenumber" name="300" href="#300">300</a>                 keys.add(it.next());
<a class="jxr_linenumber" name="301" href="#301">301</a>             }
<a class="jxr_linenumber" name="302" href="#302">302</a>         }
<a class="jxr_linenumber" name="303" href="#303">303</a> 
<a class="jxr_linenumber" name="304" href="#304">304</a>         <strong class="jxr_keyword">return</strong> keys.iterator();
<a class="jxr_linenumber" name="305" href="#305">305</a>     }
<a class="jxr_linenumber" name="306" href="#306">306</a> 
<a class="jxr_linenumber" name="307" href="#307">307</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isEmpty()
<a class="jxr_linenumber" name="308" href="#308">308</a>     {
<a class="jxr_linenumber" name="309" href="#309">309</a>         <strong class="jxr_keyword">for</strong> (Configuration config : configList)
<a class="jxr_linenumber" name="310" href="#310">310</a>         {
<a class="jxr_linenumber" name="311" href="#311">311</a>             <strong class="jxr_keyword">if</strong> (!config.isEmpty())
<a class="jxr_linenumber" name="312" href="#312">312</a>             {
<a class="jxr_linenumber" name="313" href="#313">313</a>                 <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="314" href="#314">314</a>             }
<a class="jxr_linenumber" name="315" href="#315">315</a>         }
<a class="jxr_linenumber" name="316" href="#316">316</a> 
<a class="jxr_linenumber" name="317" href="#317">317</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="318" href="#318">318</a>     }
<a class="jxr_linenumber" name="319" href="#319">319</a> 
<a class="jxr_linenumber" name="320" href="#320">320</a>     @Override
<a class="jxr_linenumber" name="321" href="#321">321</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> clearPropertyDirect(String key)
<a class="jxr_linenumber" name="322" href="#322">322</a>     {
<a class="jxr_linenumber" name="323" href="#323">323</a>         <strong class="jxr_keyword">for</strong> (Configuration config : configList)
<a class="jxr_linenumber" name="324" href="#324">324</a>         {
<a class="jxr_linenumber" name="325" href="#325">325</a>             config.clearProperty(key);
<a class="jxr_linenumber" name="326" href="#326">326</a>         }
<a class="jxr_linenumber" name="327" href="#327">327</a>     }
<a class="jxr_linenumber" name="328" href="#328">328</a> 
<a class="jxr_linenumber" name="329" href="#329">329</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> containsKey(String key)
<a class="jxr_linenumber" name="330" href="#330">330</a>     {
<a class="jxr_linenumber" name="331" href="#331">331</a>         <strong class="jxr_keyword">for</strong> (Configuration config : configList)
<a class="jxr_linenumber" name="332" href="#332">332</a>         {
<a class="jxr_linenumber" name="333" href="#333">333</a>             <strong class="jxr_keyword">if</strong> (config.containsKey(key))
<a class="jxr_linenumber" name="334" href="#334">334</a>             {
<a class="jxr_linenumber" name="335" href="#335">335</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="336" href="#336">336</a>             }
<a class="jxr_linenumber" name="337" href="#337">337</a>         }
<a class="jxr_linenumber" name="338" href="#338">338</a>         <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="339" href="#339">339</a>     }
<a class="jxr_linenumber" name="340" href="#340">340</a> 
<a class="jxr_linenumber" name="341" href="#341">341</a>     @Override
<a class="jxr_linenumber" name="342" href="#342">342</a>     <strong class="jxr_keyword">public</strong> List&lt;Object&gt; getList(String key, List&lt;Object&gt; defaultValue)
<a class="jxr_linenumber" name="343" href="#343">343</a>     {
<a class="jxr_linenumber" name="344" href="#344">344</a>         List&lt;Object&gt; list = <strong class="jxr_keyword">new</strong> ArrayList&lt;Object&gt;();
<a class="jxr_linenumber" name="345" href="#345">345</a> 
<a class="jxr_linenumber" name="346" href="#346">346</a>         <em class="jxr_comment">// add all elements from the first configuration containing the requested key</em>
<a class="jxr_linenumber" name="347" href="#347">347</a>         Iterator&lt;Configuration&gt; it = configList.iterator();
<a class="jxr_linenumber" name="348" href="#348">348</a>         <strong class="jxr_keyword">while</strong> (it.hasNext() &amp;&amp; list.isEmpty())
<a class="jxr_linenumber" name="349" href="#349">349</a>         {
<a class="jxr_linenumber" name="350" href="#350">350</a>             <a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> config = it.next();
<a class="jxr_linenumber" name="351" href="#351">351</a>             <strong class="jxr_keyword">if</strong> (config != inMemoryConfiguration &amp;&amp; config.containsKey(key))
<a class="jxr_linenumber" name="352" href="#352">352</a>             {
<a class="jxr_linenumber" name="353" href="#353">353</a>                 appendListProperty(list, config, key);
<a class="jxr_linenumber" name="354" href="#354">354</a>             }
<a class="jxr_linenumber" name="355" href="#355">355</a>         }
<a class="jxr_linenumber" name="356" href="#356">356</a> 
<a class="jxr_linenumber" name="357" href="#357">357</a>         <em class="jxr_comment">// add all elements from the in memory configuration</em>
<a class="jxr_linenumber" name="358" href="#358">358</a>         appendListProperty(list, inMemoryConfiguration, key);
<a class="jxr_linenumber" name="359" href="#359">359</a> 
<a class="jxr_linenumber" name="360" href="#360">360</a>         <strong class="jxr_keyword">if</strong> (list.isEmpty())
<a class="jxr_linenumber" name="361" href="#361">361</a>         {
<a class="jxr_linenumber" name="362" href="#362">362</a>             <strong class="jxr_keyword">return</strong> defaultValue;
<a class="jxr_linenumber" name="363" href="#363">363</a>         }
<a class="jxr_linenumber" name="364" href="#364">364</a> 
<a class="jxr_linenumber" name="365" href="#365">365</a>         ListIterator&lt;Object&gt; lit = list.listIterator();
<a class="jxr_linenumber" name="366" href="#366">366</a>         <strong class="jxr_keyword">while</strong> (lit.hasNext())
<a class="jxr_linenumber" name="367" href="#367">367</a>         {
<a class="jxr_linenumber" name="368" href="#368">368</a>             lit.set(interpolate(lit.next()));
<a class="jxr_linenumber" name="369" href="#369">369</a>         }
<a class="jxr_linenumber" name="370" href="#370">370</a> 
<a class="jxr_linenumber" name="371" href="#371">371</a>         <strong class="jxr_keyword">return</strong> list;
<a class="jxr_linenumber" name="372" href="#372">372</a>     }
<a class="jxr_linenumber" name="373" href="#373">373</a> 
<a class="jxr_linenumber" name="374" href="#374">374</a>     @Override
<a class="jxr_linenumber" name="375" href="#375">375</a>     <strong class="jxr_keyword">public</strong> String[] getStringArray(String key)
<a class="jxr_linenumber" name="376" href="#376">376</a>     {
<a class="jxr_linenumber" name="377" href="#377">377</a>         List&lt;Object&gt; list = getList(key);
<a class="jxr_linenumber" name="378" href="#378">378</a> 
<a class="jxr_linenumber" name="379" href="#379">379</a>         <em class="jxr_comment">// transform property values into strings</em>
<a class="jxr_linenumber" name="380" href="#380">380</a>         String[] tokens = <strong class="jxr_keyword">new</strong> String[list.size()];
<a class="jxr_linenumber" name="381" href="#381">381</a> 
<a class="jxr_linenumber" name="382" href="#382">382</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; tokens.length; i++)
<a class="jxr_linenumber" name="383" href="#383">383</a>         {
<a class="jxr_linenumber" name="384" href="#384">384</a>             tokens[i] = String.valueOf(list.get(i));
<a class="jxr_linenumber" name="385" href="#385">385</a>         }
<a class="jxr_linenumber" name="386" href="#386">386</a> 
<a class="jxr_linenumber" name="387" href="#387">387</a>         <strong class="jxr_keyword">return</strong> tokens;
<a class="jxr_linenumber" name="388" href="#388">388</a>     }
<a class="jxr_linenumber" name="389" href="#389">389</a> 
<a class="jxr_linenumber" name="390" href="#390">390</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="391" href="#391">391</a> <em class="jxr_javadoccomment">     * Return the configuration at the specified index.</em>
<a class="jxr_linenumber" name="392" href="#392">392</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="393" href="#393">393</a> <em class="jxr_javadoccomment">     * @param index The index of the configuration to retrieve</em>
<a class="jxr_linenumber" name="394" href="#394">394</a> <em class="jxr_javadoccomment">     * @return the configuration at this index</em>
<a class="jxr_linenumber" name="395" href="#395">395</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="396" href="#396">396</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> getConfiguration(<strong class="jxr_keyword">int</strong> index)
<a class="jxr_linenumber" name="397" href="#397">397</a>     {
<a class="jxr_linenumber" name="398" href="#398">398</a>         <strong class="jxr_keyword">return</strong> configList.get(index);
<a class="jxr_linenumber" name="399" href="#399">399</a>     }
<a class="jxr_linenumber" name="400" href="#400">400</a> 
<a class="jxr_linenumber" name="401" href="#401">401</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="402" href="#402">402</a> <em class="jxr_javadoccomment">     * Returns the &amp;quot;in memory configuration&amp;quot;. In this configuration</em>
<a class="jxr_linenumber" name="403" href="#403">403</a> <em class="jxr_javadoccomment">     * changes are stored.</em>
<a class="jxr_linenumber" name="404" href="#404">404</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="405" href="#405">405</a> <em class="jxr_javadoccomment">     * @return the in memory configuration</em>
<a class="jxr_linenumber" name="406" href="#406">406</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="407" href="#407">407</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> getInMemoryConfiguration()
<a class="jxr_linenumber" name="408" href="#408">408</a>     {
<a class="jxr_linenumber" name="409" href="#409">409</a>         <strong class="jxr_keyword">return</strong> inMemoryConfiguration;
<a class="jxr_linenumber" name="410" href="#410">410</a>     }
<a class="jxr_linenumber" name="411" href="#411">411</a> 
<a class="jxr_linenumber" name="412" href="#412">412</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="413" href="#413">413</a> <em class="jxr_javadoccomment">     * Returns a copy of this object. This implementation will create a deep</em>
<a class="jxr_linenumber" name="414" href="#414">414</a> <em class="jxr_javadoccomment">     * clone, i.e. all configurations contained in this composite will also be</em>
<a class="jxr_linenumber" name="415" href="#415">415</a> <em class="jxr_javadoccomment">     * cloned. This only works if all contained configurations support cloning;</em>
<a class="jxr_linenumber" name="416" href="#416">416</a> <em class="jxr_javadoccomment">     * otherwise a runtime exception will be thrown. Registered event handlers</em>
<a class="jxr_linenumber" name="417" href="#417">417</a> <em class="jxr_javadoccomment">     * won't get cloned.</em>
<a class="jxr_linenumber" name="418" href="#418">418</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="419" href="#419">419</a> <em class="jxr_javadoccomment">     * @return the copy</em>
<a class="jxr_linenumber" name="420" href="#420">420</a> <em class="jxr_javadoccomment">     * @since 1.3</em>
<a class="jxr_linenumber" name="421" href="#421">421</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="422" href="#422">422</a>     @Override
<a class="jxr_linenumber" name="423" href="#423">423</a>     <strong class="jxr_keyword">public</strong> Object clone()
<a class="jxr_linenumber" name="424" href="#424">424</a>     {
<a class="jxr_linenumber" name="425" href="#425">425</a>         <strong class="jxr_keyword">try</strong>
<a class="jxr_linenumber" name="426" href="#426">426</a>         {
<a class="jxr_linenumber" name="427" href="#427">427</a>             <a href="../../../../org/apache/commons/configuration/CompositeConfiguration.html">CompositeConfiguration</a> copy = (CompositeConfiguration) <strong class="jxr_keyword">super</strong>
<a class="jxr_linenumber" name="428" href="#428">428</a>                     .clone();
<a class="jxr_linenumber" name="429" href="#429">429</a>             copy.clearConfigurationListeners();
<a class="jxr_linenumber" name="430" href="#430">430</a>             copy.configList = <strong class="jxr_keyword">new</strong> LinkedList&lt;Configuration&gt;();
<a class="jxr_linenumber" name="431" href="#431">431</a>             copy.inMemoryConfiguration = <a href="../../../../org/apache/commons/configuration/ConfigurationUtils.html">ConfigurationUtils</a>
<a class="jxr_linenumber" name="432" href="#432">432</a>                     .cloneConfiguration(getInMemoryConfiguration());
<a class="jxr_linenumber" name="433" href="#433">433</a>             copy.configList.add(copy.inMemoryConfiguration);
<a class="jxr_linenumber" name="434" href="#434">434</a> 
<a class="jxr_linenumber" name="435" href="#435">435</a>             <strong class="jxr_keyword">for</strong> (Configuration config : configList)
<a class="jxr_linenumber" name="436" href="#436">436</a>             {
<a class="jxr_linenumber" name="437" href="#437">437</a>                 <strong class="jxr_keyword">if</strong> (config != getInMemoryConfiguration())
<a class="jxr_linenumber" name="438" href="#438">438</a>                 {
<a class="jxr_linenumber" name="439" href="#439">439</a>                     copy.addConfiguration(<a href="../../../../org/apache/commons/configuration/ConfigurationUtils.html">ConfigurationUtils</a>
<a class="jxr_linenumber" name="440" href="#440">440</a>                             .cloneConfiguration(config));
<a class="jxr_linenumber" name="441" href="#441">441</a>                 }
<a class="jxr_linenumber" name="442" href="#442">442</a>             }
<a class="jxr_linenumber" name="443" href="#443">443</a> 
<a class="jxr_linenumber" name="444" href="#444">444</a>             <strong class="jxr_keyword">return</strong> copy;
<a class="jxr_linenumber" name="445" href="#445">445</a>         }
<a class="jxr_linenumber" name="446" href="#446">446</a>         <strong class="jxr_keyword">catch</strong> (CloneNotSupportedException cnex)
<a class="jxr_linenumber" name="447" href="#447">447</a>         {
<a class="jxr_linenumber" name="448" href="#448">448</a>             <em class="jxr_comment">// cannot happen</em>
<a class="jxr_linenumber" name="449" href="#449">449</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/commons/configuration/ConfigurationRuntimeException.html">ConfigurationRuntimeException</a>(cnex);
<a class="jxr_linenumber" name="450" href="#450">450</a>         }
<a class="jxr_linenumber" name="451" href="#451">451</a>     }
<a class="jxr_linenumber" name="452" href="#452">452</a> 
<a class="jxr_linenumber" name="453" href="#453">453</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="454" href="#454">454</a> <em class="jxr_javadoccomment">     * Sets a flag whether added values for string properties should be checked</em>
<a class="jxr_linenumber" name="455" href="#455">455</a> <em class="jxr_javadoccomment">     * for the list delimiter. This implementation ensures that the in memory</em>
<a class="jxr_linenumber" name="456" href="#456">456</a> <em class="jxr_javadoccomment">     * configuration is correctly initialized.</em>
<a class="jxr_linenumber" name="457" href="#457">457</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="458" href="#458">458</a> <em class="jxr_javadoccomment">     * @param delimiterParsingDisabled the new value of the flag</em>
<a class="jxr_linenumber" name="459" href="#459">459</a> <em class="jxr_javadoccomment">     * @since 1.4</em>
<a class="jxr_linenumber" name="460" href="#460">460</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="461" href="#461">461</a>     @Override
<a class="jxr_linenumber" name="462" href="#462">462</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setDelimiterParsingDisabled(<strong class="jxr_keyword">boolean</strong> delimiterParsingDisabled)
<a class="jxr_linenumber" name="463" href="#463">463</a>     {
<a class="jxr_linenumber" name="464" href="#464">464</a>         <strong class="jxr_keyword">if</strong> (inMemoryConfiguration instanceof AbstractConfiguration)
<a class="jxr_linenumber" name="465" href="#465">465</a>         {
<a class="jxr_linenumber" name="466" href="#466">466</a>             ((<a href="../../../../org/apache/commons/configuration/AbstractConfiguration.html">AbstractConfiguration</a>) inMemoryConfiguration)
<a class="jxr_linenumber" name="467" href="#467">467</a>                     .setDelimiterParsingDisabled(delimiterParsingDisabled);
<a class="jxr_linenumber" name="468" href="#468">468</a>         }
<a class="jxr_linenumber" name="469" href="#469">469</a>         <strong class="jxr_keyword">super</strong>.setDelimiterParsingDisabled(delimiterParsingDisabled);
<a class="jxr_linenumber" name="470" href="#470">470</a>     }
<a class="jxr_linenumber" name="471" href="#471">471</a> 
<a class="jxr_linenumber" name="472" href="#472">472</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="473" href="#473">473</a> <em class="jxr_javadoccomment">     * Sets the character that is used as list delimiter. This implementation</em>
<a class="jxr_linenumber" name="474" href="#474">474</a> <em class="jxr_javadoccomment">     * ensures that the in memory configuration is correctly initialized.</em>
<a class="jxr_linenumber" name="475" href="#475">475</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="476" href="#476">476</a> <em class="jxr_javadoccomment">     * @param listDelimiter the new list delimiter character</em>
<a class="jxr_linenumber" name="477" href="#477">477</a> <em class="jxr_javadoccomment">     * @since 1.4</em>
<a class="jxr_linenumber" name="478" href="#478">478</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="479" href="#479">479</a>     @Override
<a class="jxr_linenumber" name="480" href="#480">480</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setListDelimiter(<strong class="jxr_keyword">char</strong> listDelimiter)
<a class="jxr_linenumber" name="481" href="#481">481</a>     {
<a class="jxr_linenumber" name="482" href="#482">482</a>         <strong class="jxr_keyword">if</strong> (inMemoryConfiguration instanceof AbstractConfiguration)
<a class="jxr_linenumber" name="483" href="#483">483</a>         {
<a class="jxr_linenumber" name="484" href="#484">484</a>             ((<a href="../../../../org/apache/commons/configuration/AbstractConfiguration.html">AbstractConfiguration</a>) inMemoryConfiguration)
<a class="jxr_linenumber" name="485" href="#485">485</a>                     .setListDelimiter(listDelimiter);
<a class="jxr_linenumber" name="486" href="#486">486</a>         }
<a class="jxr_linenumber" name="487" href="#487">487</a>         <strong class="jxr_keyword">super</strong>.setListDelimiter(listDelimiter);
<a class="jxr_linenumber" name="488" href="#488">488</a>     }
<a class="jxr_linenumber" name="489" href="#489">489</a> 
<a class="jxr_linenumber" name="490" href="#490">490</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="491" href="#491">491</a> <em class="jxr_javadoccomment">     * Returns the configuration source, in which the specified key is defined.</em>
<a class="jxr_linenumber" name="492" href="#492">492</a> <em class="jxr_javadoccomment">     * This method will iterate over all existing child configurations and check</em>
<a class="jxr_linenumber" name="493" href="#493">493</a> <em class="jxr_javadoccomment">     * whether they contain the specified key. The following constellations are</em>
<a class="jxr_linenumber" name="494" href="#494">494</a> <em class="jxr_javadoccomment">     * possible:</em>
<a class="jxr_linenumber" name="495" href="#495">495</a> <em class="jxr_javadoccomment">     * &lt;ul&gt;</em>
<a class="jxr_linenumber" name="496" href="#496">496</a> <em class="jxr_javadoccomment">     * &lt;li&gt;If exactly one child configuration contains the key, this</em>
<a class="jxr_linenumber" name="497" href="#497">497</a> <em class="jxr_javadoccomment">     * configuration is returned as the source configuration. This may be the</em>
<a class="jxr_linenumber" name="498" href="#498">498</a> <em class="jxr_javadoccomment">     * &lt;em&gt;in memory configuration&lt;/em&gt; (this has to be explicitly checked by</em>
<a class="jxr_linenumber" name="499" href="#499">499</a> <em class="jxr_javadoccomment">     * the calling application).&lt;/li&gt;</em>
<a class="jxr_linenumber" name="500" href="#500">500</a> <em class="jxr_javadoccomment">     * &lt;li&gt;If none of the child configurations contain the key, &lt;b&gt;null&lt;/b&gt; is</em>
<a class="jxr_linenumber" name="501" href="#501">501</a> <em class="jxr_javadoccomment">     * returned.&lt;/li&gt;</em>
<a class="jxr_linenumber" name="502" href="#502">502</a> <em class="jxr_javadoccomment">     * &lt;li&gt;If the key is contained in multiple child configurations or if the</em>
<a class="jxr_linenumber" name="503" href="#503">503</a> <em class="jxr_javadoccomment">     * key is &lt;b&gt;null&lt;/b&gt;, a {@code IllegalArgumentException} is thrown.</em>
<a class="jxr_linenumber" name="504" href="#504">504</a> <em class="jxr_javadoccomment">     * In this case the source configuration cannot be determined.&lt;/li&gt;</em>
<a class="jxr_linenumber" name="505" href="#505">505</a> <em class="jxr_javadoccomment">     * &lt;/ul&gt;</em>
<a class="jxr_linenumber" name="506" href="#506">506</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="507" href="#507">507</a> <em class="jxr_javadoccomment">     * @param key the key to be checked</em>
<a class="jxr_linenumber" name="508" href="#508">508</a> <em class="jxr_javadoccomment">     * @return the source configuration of this key</em>
<a class="jxr_linenumber" name="509" href="#509">509</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the source configuration cannot be</em>
<a class="jxr_linenumber" name="510" href="#510">510</a> <em class="jxr_javadoccomment">     * determined</em>
<a class="jxr_linenumber" name="511" href="#511">511</a> <em class="jxr_javadoccomment">     * @since 1.5</em>
<a class="jxr_linenumber" name="512" href="#512">512</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="513" href="#513">513</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> getSource(String key)
<a class="jxr_linenumber" name="514" href="#514">514</a>     {
<a class="jxr_linenumber" name="515" href="#515">515</a>         <strong class="jxr_keyword">if</strong> (key == <strong class="jxr_keyword">null</strong>)
<a class="jxr_linenumber" name="516" href="#516">516</a>         {
<a class="jxr_linenumber" name="517" href="#517">517</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Key must not be null!"</span>);
<a class="jxr_linenumber" name="518" href="#518">518</a>         }
<a class="jxr_linenumber" name="519" href="#519">519</a> 
<a class="jxr_linenumber" name="520" href="#520">520</a>         <a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> source = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="521" href="#521">521</a>         <strong class="jxr_keyword">for</strong> (Configuration conf : configList)
<a class="jxr_linenumber" name="522" href="#522">522</a>         {
<a class="jxr_linenumber" name="523" href="#523">523</a>             <strong class="jxr_keyword">if</strong> (conf.containsKey(key))
<a class="jxr_linenumber" name="524" href="#524">524</a>             {
<a class="jxr_linenumber" name="525" href="#525">525</a>                 <strong class="jxr_keyword">if</strong> (source != <strong class="jxr_keyword">null</strong>)
<a class="jxr_linenumber" name="526" href="#526">526</a>                 {
<a class="jxr_linenumber" name="527" href="#527">527</a>                     <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"The key "</span> + key
<a class="jxr_linenumber" name="528" href="#528">528</a>                             + <span class="jxr_string">" is defined by multiple sources!"</span>);
<a class="jxr_linenumber" name="529" href="#529">529</a>                 }
<a class="jxr_linenumber" name="530" href="#530">530</a>                 source = conf;
<a class="jxr_linenumber" name="531" href="#531">531</a>             }
<a class="jxr_linenumber" name="532" href="#532">532</a>         }
<a class="jxr_linenumber" name="533" href="#533">533</a> 
<a class="jxr_linenumber" name="534" href="#534">534</a>         <strong class="jxr_keyword">return</strong> source;
<a class="jxr_linenumber" name="535" href="#535">535</a>     }
<a class="jxr_linenumber" name="536" href="#536">536</a> 
<a class="jxr_linenumber" name="537" href="#537">537</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="538" href="#538">538</a> <em class="jxr_javadoccomment">     * Replaces the current in-memory configuration by the given one.</em>
<a class="jxr_linenumber" name="539" href="#539">539</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="540" href="#540">540</a> <em class="jxr_javadoccomment">     * @param config the new in-memory configuration</em>
<a class="jxr_linenumber" name="541" href="#541">541</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="542" href="#542">542</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> replaceInMemoryConfiguration(<a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> config)
<a class="jxr_linenumber" name="543" href="#543">543</a>     {
<a class="jxr_linenumber" name="544" href="#544">544</a>         <strong class="jxr_keyword">if</strong> (!inMemoryConfigIsChild)
<a class="jxr_linenumber" name="545" href="#545">545</a>         {
<a class="jxr_linenumber" name="546" href="#546">546</a>             <em class="jxr_comment">// remove current in-memory configuration</em>
<a class="jxr_linenumber" name="547" href="#547">547</a>             configList.remove(inMemoryConfiguration);
<a class="jxr_linenumber" name="548" href="#548">548</a>         }
<a class="jxr_linenumber" name="549" href="#549">549</a>         inMemoryConfiguration = config;
<a class="jxr_linenumber" name="550" href="#550">550</a>     }
<a class="jxr_linenumber" name="551" href="#551">551</a> 
<a class="jxr_linenumber" name="552" href="#552">552</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="553" href="#553">553</a> <em class="jxr_javadoccomment">     * Adds the value of a property to the given list. This method is used by</em>
<a class="jxr_linenumber" name="554" href="#554">554</a> <em class="jxr_javadoccomment">     * {@code getList()} for gathering property values from the child</em>
<a class="jxr_linenumber" name="555" href="#555">555</a> <em class="jxr_javadoccomment">     * configurations.</em>
<a class="jxr_linenumber" name="556" href="#556">556</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="557" href="#557">557</a> <em class="jxr_javadoccomment">     * @param dest the list for collecting the data</em>
<a class="jxr_linenumber" name="558" href="#558">558</a> <em class="jxr_javadoccomment">     * @param config the configuration to query</em>
<a class="jxr_linenumber" name="559" href="#559">559</a> <em class="jxr_javadoccomment">     * @param key the key of the property</em>
<a class="jxr_linenumber" name="560" href="#560">560</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="561" href="#561">561</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> appendListProperty(List&lt;Object&gt; dest, <a href="../../../../org/apache/commons/configuration/Configuration.html">Configuration</a> config,
<a class="jxr_linenumber" name="562" href="#562">562</a>             String key)
<a class="jxr_linenumber" name="563" href="#563">563</a>     {
<a class="jxr_linenumber" name="564" href="#564">564</a>         Object value = config.getProperty(key);
<a class="jxr_linenumber" name="565" href="#565">565</a>         <strong class="jxr_keyword">if</strong> (value != <strong class="jxr_keyword">null</strong>)
<a class="jxr_linenumber" name="566" href="#566">566</a>         {
<a class="jxr_linenumber" name="567" href="#567">567</a>             <strong class="jxr_keyword">if</strong> (value instanceof Collection)
<a class="jxr_linenumber" name="568" href="#568">568</a>             {
<a class="jxr_linenumber" name="569" href="#569">569</a>                 Collection&lt;?&gt; col = (Collection&lt;?&gt;) value;
<a class="jxr_linenumber" name="570" href="#570">570</a>                 dest.addAll(col);
<a class="jxr_linenumber" name="571" href="#571">571</a>             }
<a class="jxr_linenumber" name="572" href="#572">572</a>             <strong class="jxr_keyword">else</strong>
<a class="jxr_linenumber" name="573" href="#573">573</a>             {
<a class="jxr_linenumber" name="574" href="#574">574</a>                 dest.add(value);
<a class="jxr_linenumber" name="575" href="#575">575</a>             }
<a class="jxr_linenumber" name="576" href="#576">576</a>         }
<a class="jxr_linenumber" name="577" href="#577">577</a>     }
<a class="jxr_linenumber" name="578" href="#578">578</a> }
</pre>
<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body>
</html>

